[RFC PATCH v3 3/5] pinctrl: imx: add pinctrl imx driver

Linus Walleij linus.walleij at linaro.org
Wed Jan 11 04:28:43 EST 2012

On Tue, Jan 10, 2012 at 2:51 PM, Shawn Guo <shawn.guo at linaro.org> wrote:
> On Tue, Jan 10, 2012 at 11:43:28AM +0100, Linus Walleij wrote:
>> What we need to know right now is what you need from the pin
>> controller core to do that. We have a (custom) pinconf API now,
>> does it fit the bill?
> Hmm, I do not think it fits right away, as I do not think it's sensible
> to have pinctrl client drivers call pin_config_set() directly.

OK that's more or less what Stephen said too so I'm cooking a
config table ala pinmux with string identifiers.

>> I have spent some time on generic pin config, it was not much
>> commented so if it helps you please ACK the patches.
> Since the ARM community is the one who is most interested in pinctrl
> subsystem so far, I guess copying LAKML will help collect more comments
> and various tags.  (For example, I'm interested in pinctrl, but I do
> not track LKML as close as I do for LAKML).

True. I'll fix that.

>> Next from discussions with Stpehen I've sort of figured out that
>> we need a config mapping table of sorts and then a means to activate
>> entries of that table at runtime. I'm trying to come up with something
>> for this.
> That's something we are waiting for pinconf being usable for imx.

I'll fix something, please review when it appears!

Linus Walleij

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